Premium
Trypsin isozymes in Atlantic salmon, Salmo salar L.: studies of heredity, egg quality and effect on growth of three different populations
Author(s) -
TORRISSEN K. R.,
MALE R.,
NÆVDAL G.
Publication year - 1993
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1993.tb00564.x
Subject(s) - salmo , isozyme , biology , trypsin , isoelectric focusing , genetics , isoelectric point , biochemistry , enzyme , fish <actinopterygii> , fishery
. Isoelectric focusing of Atlantic salmon, Salmo salar L., trypsin resolved three major isozymes designated TRP‐1, TRP‐2 and TRP‐3 , with three variants, TRP‐l(9l), TRP‐l(75) and TRP‐2(92). The TRP‐1 and TRP‐2 may represent duplicated loci which exhibit either tetrasomic or disomic inheritance from pairing of homeologous chromosomes. A significant difference in growth during 3 months after first‐feeding was observed in the families exhibiting a high frequency of the isozyme TRP‐2(92) (f≥0·5). Studies of three salmon populations suggested a correlation between the presence of this isozyme and better growth rate. No difference in egg quality was observed between the families possessing and lacking the trypsin isozyme TRP‐2(92) .